Drier



A. C. SARGENT.

DRIER.

APPLICATION FILED MAR. I0, 1921.

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` DETER.

. .,Application filed March 10, 1921. Serial No. 451,159.

To all 'whom it my concern:

. Be it known that l, ALLAN C. SAizeaNn a citizen of the United States,Vresiding at Westiord, in the cunt ave invented anew and usetul'Drier,oi'which the ollowing is Thisinvention relates to a drier for brusmaterials `in which the stock is f ed through continuously and loosenedand dried as it passes through the machine. The principal-objects of theinvention areqto provide a device orP simple characterfor both.conveying the stock through and loosening it up into a condition inwhich each liber `practically will be exposed to the drying action oitthe air introduced; and to provide improved means for directing the'current of drying air through the stock. Tn general, the inventioninvolves a construction which isI very simpleand inexpensive, has fewparts, and `is not likely to get out of order in use.

Reference is to be had tothe accompanyin drawings in which `g. 1 is aside elevation Qt a dryling plant is invenconstructed in accordance witht .tiony n Fig. 2 is a side elevation oit' the d rying and conveyingdrum proper the casi being shown with 'its stront' wail removed in orderto' illustrate the interior parts in elevation;

' Fig. 3 -is an end view of the same; 'd is acentral'sectional view onan enlarged lscale on the line 4-4 rif-Fig. 1; Fig. 5 is a-.vlongitudinal central sectional view 'showing the ends lof the device.

. ll have shown the invention asinvolving a ca sing'10y provided with aarret/shafts 11. extending longitudinall t erect .hut 1n i.an'.,{inclined direction. he shafts are id riven vfrom a pulley 12 bmeans'ot gearing e same direction.

Each shaft` 11 is liprovided with a series of i 'snpplorting rolls 1dand on these rolls is sup- .ported a conveying and dryingY .drum 15.This drum consists ofafc lin erf of wire i mesh `or other o en materiaAthat will allow the air to circan ate through it -hut prevent vided:with ay pluralitylo `cylindrical bands 16S-hy which itis supported oiynthe several pair-sof rollers V14.. At; one end-the. dis provided with av e5 zcylindrifcal receiving projection17-but both of Middlesex andAlthoughll f noted that the drum 15 'is located on an inclined axis,receives the material at the upl per end, and discharges it by gravityand its rotary action at the lower end. Tt is also provided withlongitudinal bars 21, each having a series of pins 22 located at aninclination toward thedirection in which the drum rotates for picking upthe ibrous material at the bottom, carrying it u around with them to thetop, and then etting it y drop back across the drum. This action resultsin bpening up the ber and holding it in loose conditlon.

Located between the two ends of the casingj 10 ll have shown a pair otSturtevant pressure fans 25' although any other convenient number can beused. rThey operate to draw the air in along a passage 26, art or itcoming in through a regulating amper v2'? and part 'of it coming uplthrough the drums as indicated bythe arrows. This air is forced downthrough a heating unit consisting of aseries oir steam pipes 28, in thef form shown. v. llt is forcedto circulate inte ythe bottom of the drumthrough an opening or passage 29 which may be bounded .by two wals 30and 3l. The heated air therefore passes up through the loose material,while that is in the act of falling and rising, and

out' through an opening 32 into the passage i,

.95: tremely simple drying device and vone that. i

26.(This atords av vvery edicient and enaey has. great durability andrequires verylittle 1 attention.

only asin le orinot thetfinventionll am. awarey et t e fact'pthatmodications can he made therein by any` erson' skilled in the artwitljiofutl departin rom the scope et the invention asexpresse intheclaims.. There- ,'oreg Tide not wish to be limited to all thelthe-combirfationf or arotary having have described and illustrated les'details of construction and' arrangements -walls through which the aircan circulate freely and providedwith internal inclined straight pointedpins for carrying the stock upwardly and part way around as the drumrotates, a heating unit adjacent to the drum between its ends, means forblowing air through said unit and intothe drum near the bottom, andmeans for leading the current of air' from the top of the drumtransversely back to said blowing means.

2. In a drier for fibrous materials, the

' combination of an inclined rotary screen 1drum having longitudinalrows of carrying pins projecting inwardly therefrom at an angle, meansfor rotatlng sald drum, means for nasales forcing it down through theheating pipes.v ln testimony whereof I have hereunto aixed my signature.

ALLAN o.' sARGENT.'

